The Modified Southeast Change was right overhead this afternoon

And what is a Modified Southeast Change, I hear you ask? Well...
Modified Southeast Change days occur when a southeast change moves into a hot, dry airmass. This creates a brief period where the airmass takes on properties from both cooler, humid southeast winds and hot, dry northwest winds. The result is locally increased instability, with CAPE (Convective Available Potential Energy) values exceeding 2000-3000 j/kg. This instability is ideal for producing severe storms", according to this excellent post from Anthony Cornelius of WeatherWatch: www.weatherwat...
And I think that line is pretty much going right down the middle of the frame here, until they finally coalesced at about 18:00 and we got some awesome cloud-ground lightning strikes walking up the river valley towards us, along with some lovely cooling rain, and wind from the south!
Also, watch out for some lovely play in the rays of the setting sun shining through a curtain of rain about the 17:24 mark :), and a curtain of rain illuminated by the setting sun way down southwest at about the 16:27 mark.
Save this playlist and send it to your TV for a magnificent video wall! • View from the Roof

[@Kyncliik]

Good.

[@L1ttl3J1m]

That's some really nice timing on the audio there, RUclips Editor Audio Algorithm, very well done! 😮🤯🤣🤣